A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6645-00-856-7478
NSN 7035-00-392-5417
NSN 6320-01-029-2196
NSN 5915-00-010-3011
NSN 6145-01-102-5698
NSN 5905-00-170-1869
NSN 5960-00-716-7655
NSN 6130-01-278-6948
NSN 5915-01-571-3925
NSN 5990-01-032-3832
NSN 6110-01-154-9172
NSN 2925-01-477-8037